1. Home
  2. Directory
  3. California
  4. San Francisco
  5. Physician Assistant
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

STEPHANIE MESSINA PA
NPI 1912202987
Physician Assistant in San Francisco, CA

Active since January 21, 2011PECOS Enrolled
2340 CLAY ST FL 6, SAN FRANCISCO, CA 94115(424) 444-7399(424) 253-0814 Get Directions Write a Review

NPPES record last updated: June 30, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Mar 30, 2026, Apr 19, 2021 (2 updates tracked since 2021).

About Stephanie Messina Pa NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

STEPHANIE MESSINA PA (NPI 1912202987) is an individual physician assistant in San Francisco, California, licensed in California (PA21409) and active in the NPI registry since January 2011. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1912202987
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameSTEPHANIE MESSINACredential: PA
Location Address2340 CLAY ST FL 6San Francisco, CA 94115-1932
Mailing Address2340 Clay St Fl 6San Francisco, CA 94115-1932 · (424) 444-7399 · Fax (424) 253-0814
Phone(424) 444-7399
Fax(424) 253-0814
Sole ProprietorNo
Enumeration DateJanuary 21, 2011
Last NPPES UpdateJune 30, 20262 updates tracked since enumeration
NPPES CertifiedJune 30, 2026
✔ NPI 1912202987 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in CA · PA21409
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
2340 CLAY ST FL 6, San Francisco, CA 94115
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Stephanie Messina Pa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 13

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MD WEIGHT MANAGEMENT, INC.
Internal Medicine
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
San Francisco County (415) 674-5200
DR. ANITA N DEMAS M.D.
Internal Medicine
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
San Francisco County (415) 674-5200
DR. DIPTI PADMALAYAM M.D.
Internal Medicine
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
San Francisco County (415) 674-5200
DR. KERSTIN MOREHEAD M.D.
Internal Medicine (Rheumatology)
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
San Francisco County (415) 674-5200
CLAIRE TARGOFF M.D.
Internal Medicine (Rheumatology)
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
San Francisco County (415) 674-5200
LAUREN GERSON, MD, PC
Internal Medicine (Gastroenterology)
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
San Francisco County (415) 600-5700
DESSIE MANUELA PARASKEVAS HAMMOND PA-C
Physician Assistant
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
San Francisco County (415) 674-5200
JEANETTE LILLY BLANKS NP
Nurse Practitioner (Family)
2340 CLAY ST FL 6
SAN FRANCISCO, CA 94115
San Francisco County (415) 674-5200

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Stephanie Messina's NPI number?

The NPI number for Stephanie Messina is 1912202987. It was assigned to this individual provider in the NPPES registry on January 21, 2011.

Where is Stephanie Messina located?

Stephanie Messina practices at 2340 Clay St Fl 6, San Francisco, CA 94115. The listed phone number is (424) 444-7399.

What is Stephanie Messina's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Stephanie Messina enrolled in Medicare?

Yes. Stephanie Messina is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Stephanie Messina was last updated on June 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 53 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.